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Ytterbium-doped samarium zirconate cerate thermal barrier coating material as well as preparation method and application thereof
The invention discloses an ytterbium-doped samarium zirconate cerate thermal barrier coating material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, carrying out ball milling and mixing on Yb2O3, Sm2O3, ZrO2 and CeO2 powder raw materials according to a ratio, then synthesizing (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 powder (x is greater than or equal to 0.1 and less than or equal to 0.3) through a high-temperature solid-phase reaction method, and carrying out dry pressing molding and high-temperature sintering to obtain the (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 compact ceramic material. Ytterbium rare earth element doped zirconate is adopted, dry pressing forming and high-temperature sintering are carried out to obtain the novel thermal barrier coating material ytterbium-doped samarium zirconate cerate (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7, the (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 material has higher bond strength compared with a Sm2 (Zr0. 7Ce0. 3) 2O7 material, the chemical affinity of Ca ions and rare earth ions in CMAS is reduced, a large number of apatite phases which can effectively prevent CMAS from permeating are formed after CMAS corrosion is carried out for a long time at the temperature of 1300 DEG C, and therefore the thermal barrier coating material can be used for thermal barrier coating of a high-temperature-resistant material. And the thermal barrier coating has excellent CMAS corrosion resistance, and the corrosion resistance of the thermal barrier coating in a harsh turbine service environment can be improved.
本发明公开了一种镱掺杂锆铈酸钐热障涂层材料及其制备方法与应用。本发明首先以Yb2O3、Sm2O3、ZrO2以及CeO2粉末原料按照配比球磨混合，随后通过高温固相反应法合成(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7粉末，其中0.1≤x≤0.3，并通过干压成型以及高温烧结获得(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7致密陶瓷材料。本发明采用镱稀土元素掺杂锆酸盐，通过干压成型、高温烧结得到一类新型热障涂层材料镱掺杂锆铈酸钐(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7，(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7材料较Sm2(Zr0.7Ce0.3)2O7材料具有更高的键强，降低了CMAS中Ca离子与稀土离子的化学亲和性，并且在1300℃长期CMAS腐蚀后，大量形成有效阻碍CMAS渗入的磷灰石相，具有优异的抗CMAS腐蚀性能，将会提升热障涂层在苛刻涡轮服役环境中的抗腐蚀能力。
Ytterbium-doped samarium zirconate cerate thermal barrier coating material as well as preparation method and application thereof
The invention discloses an ytterbium-doped samarium zirconate cerate thermal barrier coating material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, carrying out ball milling and mixing on Yb2O3, Sm2O3, ZrO2 and CeO2 powder raw materials according to a ratio, then synthesizing (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 powder (x is greater than or equal to 0.1 and less than or equal to 0.3) through a high-temperature solid-phase reaction method, and carrying out dry pressing molding and high-temperature sintering to obtain the (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 compact ceramic material. Ytterbium rare earth element doped zirconate is adopted, dry pressing forming and high-temperature sintering are carried out to obtain the novel thermal barrier coating material ytterbium-doped samarium zirconate cerate (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7, the (Sm1-xYbx) 2 (Zr0. 7Ce0. 3) 2O7 material has higher bond strength compared with a Sm2 (Zr0. 7Ce0. 3) 2O7 material, the chemical affinity of Ca ions and rare earth ions in CMAS is reduced, a large number of apatite phases which can effectively prevent CMAS from permeating are formed after CMAS corrosion is carried out for a long time at the temperature of 1300 DEG C, and therefore the thermal barrier coating material can be used for thermal barrier coating of a high-temperature-resistant material. And the thermal barrier coating has excellent CMAS corrosion resistance, and the corrosion resistance of the thermal barrier coating in a harsh turbine service environment can be improved.
本发明公开了一种镱掺杂锆铈酸钐热障涂层材料及其制备方法与应用。本发明首先以Yb2O3、Sm2O3、ZrO2以及CeO2粉末原料按照配比球磨混合，随后通过高温固相反应法合成(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7粉末，其中0.1≤x≤0.3，并通过干压成型以及高温烧结获得(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7致密陶瓷材料。本发明采用镱稀土元素掺杂锆酸盐，通过干压成型、高温烧结得到一类新型热障涂层材料镱掺杂锆铈酸钐(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7，(Sm1‑xYbx)2(Zr0.7Ce0.3)2O7材料较Sm2(Zr0.7Ce0.3)2O7材料具有更高的键强，降低了CMAS中Ca离子与稀土离子的化学亲和性，并且在1300℃长期CMAS腐蚀后，大量形成有效阻碍CMAS渗入的磷灰石相，具有优异的抗CMAS腐蚀性能，将会提升热障涂层在苛刻涡轮服役环境中的抗腐蚀能力。
Ytterbium-doped samarium zirconate cerate thermal barrier coating material as well as preparation method and application thereof
镱掺杂锆铈酸钐热障涂层材料及其制备方法与应用
LIANG WENPING (author) / LIU RUIXIANG (author) / ZHAO HUI (author) / MIAO QIANG (author) / DONG MEIJING (author) / ZHANG MENG (author) / YAN RONGXUE (author) / WU YUTING (author) / ZANG KAI (author) / LI JINGLI (author)
2023-05-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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